text: Some aquatic organisms have developed unique respiratory mechanisms to survive in low oxygen conditions using organs other than the lungs or gills?
classes:  No, absorption of oxygen gas through the rectum is one of the new absorption mechanisms of aquatic organisms.  Also, absorption of oxygen gas through the rectum is one of the new absorption mechanisms of aquatic organisms.  Yes, absorption of oxygen gas through the rectum is one of the new absorption mechanisms of aquatic organisms.